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Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($)
$ in Thousands
Dec. 28, 2020
Dec. 30, 2019
Leases [Abstract]    
Operating lease right-of-use assets $ 24,340 $ 22,173
Other current liabilities $ 8,144 $ 7,111
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesCurrent us-gaap:OtherLiabilitiesCurrent
Operating lease liabilities $ 17,211 $ 15,413
Total operating lease liabilities $ 25,355 $ 22,524
Weighted average remaining lease term 4 years 2 months 12 days 4 years 4 months 24 days
Weighted average discount rate 3.31% 3.92%